Aircraft



Y. H. KOUN Sept. 22, 1931.

AIRCRAFT Filed Sept. 13, 1929 INVENTOR Patented Sept. 22, 1931 i a 9 earnnr OFFICE YOUIIG HO KGUN, E NEVJ' YORK, N. Y.

AIRCRAFT Application filed September 13,1929. Serial No. 332,2g6.

The main object of this invention is to proplane, the changes required in any other type vide an aircraft with vacuum or partial-vaebeing of a minor structural detail. The fuseuum tanks, for the purpose of assisting in the lagell having a cockpit12 suspended building of strong construction of wings of therefrom. Power for propulsion is attained aeroplanes, and to aid in the support of the from a power plant located in the fuselage 55 sustaining surface. which drives propeller-i3. The wings are Another object of this invention is to probuilt with a plurality of tanks-A4: which are vide means to pump air from within the wing arranged side by side, as sectional compartthat is specially constructed as hollow and ments, and which are communicating through air tight compartments, thereby causing a means of a conduitl8,to which is connected 60 vacuum or partial-vacuum in the wings and a valvel6'. Bags-l7 are mounted on each thereby lightening the wings. of the tanksand are adapted to receive gases Another object of this invention is to profrom the gas tank through means of the convidc an aircraft which combines features of necting tube-l9. The gas tanks are not heavier-than-air machines and lighter-thanshown in the drawings. 65 air machine; and is provided with inflatable The rear end of the motor has the crankbags mounted on the wing. shaft protruding, on which shafting is a pul- Mounted upon the tanlrs are streamline inley. f This pulley isfcon'nected with a pumpflated gas bags, and the difference between the compressor. A tube is attached from the atmospheric pressure on the gas bags on the pump 20, connected to valve16, and thereupper surface of the wings and the air presfrom to connected conduit-18.

sure on the lower surface of the wings be- The aeroplane described herein is adapted comes great and the lifting power of the to be flown into the air with the bags inflated. wings is increased accordingly. The wings are constructed with the tanks in The tanks are in general shaped shallow combination so that the upper surface of the and flat, and are made with light but strong wings and the lower surface of the wings are material, as some of the modern alloy metals, to form the upper and lower surfaces of the such as aerial-metal. These are built into tanks. The gas bags are made into a pure he wings of the plane, and arranged to make stream-line shape in order to minimize wind an air-tight compartment or compartments. resistance as much as possible. 80 Valves are 1 rovided on the edge of the wings, he gas bags are mounted on the wings in near to the fuselage, and conduitsare 0011- such a way that air cannot get in between nected between the valve and the tanks and them and the wings. tube connected between valve and pumps. The bags are made of double linings, the Connection to the valve from the main power outer bag being made with strong material 3 plant of the plane are provided for pumping so it can stand against the bad weathers and and providing vacuum. In the conduit-s is a d t i ti Th gas d i th Outer b valve, or valves, by means of whichair may i some i fl b1 gasbe introduced into h l 1 it is understood that at the present time 40 11132153 990%1011 y l my invention is a good improvement on an ieferrmg to E dYaW111S Flgure. 1 f aeroplane winger wings. Applying partial top'phm y Oi the aeroplane Showmg vacuum or vacuum principle on or in aerovacuum tanirs and the gas bags mounted in Diane wines is y SQ/{UL Applynu in a place on the wings thereof. f w h 1 bolt t1 g Vac as Figure 2 is a cross-sectional view taken on 00.11 f

rum is rather noubtiul in pi acticability on line 2-2 of Fi ure 1.

Figure 3 is abcrossfiectional View taken account of the difficulties of construction and line 3-3 of theFigure 1. billallclng- Referring in detail to the drawings, num- The nly way to adap hevacuuin princiber 10 indicates the wing of a monotype aeroples and uses to an airplane is the use of the 10C- partial-vacuum or vacuum on or about or in the wings.

Having now particularly described and ascertained the nature of my said invention, and the manner in which the same is to be performed, I declare that that which I claim is:

1. In an aircraft, partial vacuum or vacuum tanks built into said wings, combinations of tanks and wings to form hollow space in the said wings, bags mounted on said tanks.

2. In an aircraft, partial vacuum or vacuum tanks built into said Wings, combination of tanks and wings to form hollow space in the said wings, and stream-line gas bags mounted on the said tanks, valves mounted on the edge of said wings, conduits connected between said tanks and valves, tube connected to said valve, pump connected to the said tubes;

3. In an aircraft partial-vacuum or vacuum provided in the Wings thereof, combinations of wings and tanks to form hollow space in the said wings, means to have air-tight compartments, streamline gas bags mounted on said tanks, valves mounted on the edge of said Wings, conduits connected between said tanks and valves, tubes connected to said valves, pumps connected to said tubes to pump air out from the said tanks.

In witness whereof I aflix my signature.

YOUNG HO KOUN.

and stream-line gas 

